The new map is Betio , a beachside cluttered with barracks and bunkers that puts the Americans on the attack. Tripwire says it “recreates the push of the US 2nd Marine Division across the devastated island against their counterparts in the 6th Special Naval Landing Force (the Japanese 'Marines') as the US forces attempt to disable key tactical objectives such as naval guns and transmitter stations. The map favors desperate pitched defenses and assaults at all costs.”

Island Assault also adds Multiplayer Campaign mode, a longer format for Rising Storm and RO2 multiplayer where the results of individual matches affect a strategic map over multiple rounds. Two new guns are also included: the PPS-42 SMG for RO2 and the Japanese Type 97 sniper rifle in Rising Storm, which Tripwire says is “more accurate than the existing Type 99 sniper rifle.”

In coordination with the content release Rising Storm is free on Steam today through Sunday, September 29.